Verdict

This Reese Towpower 21900 Class II Interlock Ball Mount is a solid choice if you want dependable, heavy-duty performance with the flexibility of rise and drop options. Just be prepared to ditch the included hitch pin and pick up the correct ½” pin elsewhere to avoid towing headaches. If you’re looking for hassle-free compatibility right out of the box, you might also want to check out other Class II ball mounts that come with the right hardware included, but for reliability and fit, this one holds up well.

Top pro:
Known for reliable and consistent quality from a trusted brand like Reese Towpower.
Top con:
The included hitch pin is the wrong size: the ball mount requires a ½” pin, but it comes with a 5/8” pin, forcing buyers to source the correct pin separately.
Get an alert when the price drops or it comes back in stock.

Pros

  • •Known for reliable and consistent quality from a trusted brand like Reese Towpower.
  • •The ball mount and interlocking 2” ball are well made, sturdy, and deliver durable performance suitable for towing utility trailers.
  • •Fits perfectly on various vehicles, including specific models like the 2004 Lincoln Aviator, with no fitment issues.
  • •Includes the Reese Interlock system, which provides a secure attachment during use.
  • •Offers versatility with a 2.5-inch drop on one side and a 2-inch rise when flipped over, making it adaptable to different towing setups.
  • •Approximately 7 inches in length, providing a good balance of clearance and reach.
  • •Performs consistently as expected by users who rely on it for regular towing needs.

Cons

  • •The included hitch pin is the wrong size: the ball mount requires a ½” pin, but it comes with a 5/8” pin, forcing buyers to source the correct pin separately.
  • •The product packaging and recommendations incorrectly suggest a 5/8” pin and a 1-inch ball hole, while the actual ball hole diameter is 3/4 inch, leading to confusion and additional purchases.
  • •Stickers on the mount are very difficult to remove due to strong adhesive, which can be annoying for users wanting a clean look.
  • •The product is manufactured in China, which may feel surprising or off-putting for some buyers given Reese’s traditional American brand image.
  • •Durability over long-term exposure and heavy use is uncertain, though initial impressions suggest it is sturdy.
Lowest at Amazon
$17.06 at Amazon
Price seen Jul 23, 2026

We may earn a commission when you buy through these links, at no extra cost to you. How ShopSavvy makes money

How we researched this

About this review: it summarizes the professional reviews and customer ratings ShopSavvy collected for this product, alongside prices from 1 retailer in ShopSavvy's price data, most recently seen Jul 23, 2026.

Get ShopSavvy
ShopSavvy is totally free and works on all popular phones and browsers
Download ShopSavvy AppDownload ShopSavvy App

Compare prices across tens of thousands of stores, set price alerts, watch for deals by keyword, and much more.

Install ShopSavvy Browser ExtensionInstall ShopSavvy Browser Extension

Compare and track prices automatically while you shop online at thousands of websites.